Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1988BERETTA 2.8 W, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISFUEL INJECTION SYSTEM - MULTI-PORTTROUBLE SHOOTINGSYMPTOMSHARD START
1988 Chevrolet Beretta 2.8 W, Standard
Hard Start
1988 Chevrolet Beretta 2.8 W, StandardSECTION Hard Start
- If engine starts but then dies immediately, see appropriate ENGINE CRANKS BUT WILL NOT RUN diagnostic chart in COMPUTERIZED ENGINE CONTROL section. Check for sticking or binding TPS.
- Check for high TPS voltage with throttle closed. Voltage should be less than .7 volts. Check for high resistance in coolant sensor circuit or coolant sensor.
- Check fuel pressure and fuel pump relay. See appropriate A-7 FUEL SYSTEM DIAGNOSIS CHART in COMPUTER CONTROLS section. Check for contaminated fuel. Check in-tank fuel pump check valve operation.
- If problem exists in cold weather only, check cold start valve operation. Check fuel evaporation system. Check EGR operation. Check ignition system.
- Check spark plug condition. On 2.8L VIN S, 5.0L and 5.7L, if engine starts and immediately stalls, disconnect distributor by-pass line. If engine starts and runs okay, replace pick-up coil. If engine starts and then stalls, disconnect MAF sensor (if equipped). Replace MAF sensor if engine runs and sensor connections are okay.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.